47 lines
2.0 KiB
Diff
47 lines
2.0 KiB
Diff
From: Sven Eckelmann <sven@narfation.org>
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Date: Tue, 9 Jun 2020 14:08:44 +0200
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Subject: essedma: Disable TCP segmentation offload for IPv6
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It was noticed that the the whole MAC can hang when transferring data from
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one ar40xx port (WAN ports) to the CPU and from the CPU back to another
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ar40xx port (LAN ports). The CPU was doing only NATing in that process.
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Usually, the problem first starts with a simple data corruption:
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$ wget https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-10.4.0-amd64-netinst.iso -O /dev/null
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...
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Connecting to saimei.ftp.acc.umu.se (saimei.ftp.acc.umu.se)|2001:6b0:19::138|:443... connected.
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...
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Read error at byte 48807936/352321536 (Decryption has failed.). Retrying.
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But after a short while, the whole MAC will stop to react. No traffic can
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be transported anymore from the CPU port from/to the AR40xx PHY/switch and
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the MAC has to be resetted.
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Signed-off-by: Sven Eckelmann <sven@narfation.org>
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--- a/drivers/net/ethernet/qualcomm/essedma/edma_axi.c
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+++ b/drivers/net/ethernet/qualcomm/essedma/edma_axi.c
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@@ -972,17 +972,14 @@ static int edma_axi_probe(struct platfor
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edma_netdev[i]->features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM
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| NETIF_F_HW_VLAN_CTAG_TX
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| NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_SG |
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- NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_GRO;
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+ NETIF_F_TSO | NETIF_F_GRO;
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edma_netdev[i]->hw_features = NETIF_F_HW_CSUM | NETIF_F_RXCSUM |
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NETIF_F_HW_VLAN_CTAG_RX
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- | NETIF_F_SG | NETIF_F_TSO | NETIF_F_TSO6 |
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- NETIF_F_GRO;
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+ | NETIF_F_SG | NETIF_F_TSO | NETIF_F_GRO;
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edma_netdev[i]->vlan_features = NETIF_F_HW_CSUM | NETIF_F_SG |
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- NETIF_F_TSO | NETIF_F_TSO6 |
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- NETIF_F_GRO;
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+ NETIF_F_TSO | NETIF_F_GRO;
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edma_netdev[i]->wanted_features = NETIF_F_HW_CSUM | NETIF_F_SG |
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- NETIF_F_TSO | NETIF_F_TSO6 |
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- NETIF_F_GRO;
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+ NETIF_F_TSO | NETIF_F_GRO;
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#ifdef CONFIG_RFS_ACCEL
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edma_netdev[i]->features |= NETIF_F_RXHASH | NETIF_F_NTUPLE;
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